2AZK4-803S2.4G Wireless Keyboard

USER MAUNAL This product is 2.4G Wireless Keyboard product description see below 1. Compatible with USB1.1/2.0 specifications and passed USB-IF and WHQL test certification 2. 16 channel automatic frequency hopping, strong anti-interference ability 3. Excellent RF characteristics to ensure long-distance/non-direction 4. Full-speed USB, 2 modes, game mode (250Hz)/office mode (125Hz) Can switch online 250/125Hz 5. Support two coding methods (hardware pairing, PC software pairing) 6. Support sensor type The original series: 3212/3205/3065/3204UL/V108//8640 Built-in sensor optimization algorithm to ensure smooth and smooth 7. 6 function keys: left key, middle key, right key, forward key, back key, DPI key Instructions 1. Open "APP Test Software", select Engine Mode (as shown below), a password dialog box will pop up, enter Password "compx", enter the engineering mode. 2.Insert the receiver to be tested, <Load EMI> is activated, select the one to be tested from the drop‐down options next to it Project, and then click <Load EMI> to enter the corresponding state, as shown below Multi‐level smart power saving 1. Stop for 1 second, enter the first‐level sleep mode, the current is less than 0.3mA 2. Stop for 1 minute, enter the secondary sleep mode, the current is less than 0.15mA 3. After 15 minutes of parking, it enters the three‐level sleep mode, the Sensor LED is off, and the current is less than 30uA Support frequency：2402.85‐2480.85MHz FCC Warning Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ‐‐ Reorient or relocate the receiving antenna. ‐‐ Increase the separation between the equipment and receiver. ‐‐Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. ‐‐ Consult the dealer or an experienced radio/TV technician for help. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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Model Difference Declaration To Whom It May Concern, We, Dongguan Dexinlong Electronic Technology Co., Ltd(2.4G Wireless Keyboard) Trademark:N/A; Model Number:803S, 807S, 902, 903, 904, 905, V11, V60, WT150, WT100, V21, V31, V61;All model’s the function, software and electric circuit are the same, only with a product color, appearance and model named different. Test sample model:803S. Please contact me if you have any question. Name: zhou zhiwei Date: Apr. 20, 2021 Title: Quality supervisor Signature of applicant:

Annex A External Photos Report No.: HK2103180760‐E Page 1 of 4 Report No.: HK2103180760‐E Page 2 of 4 Report No.: HK2103180760‐E Page 3 of 4 Report No.: HK2103180760‐E Page 4 of 4

FCC ID LABEL: FCC ID: 2AZK4-803S Label Location

Annex B Internal Photo Report No.:HK2103180760-E Page 1 of 3 Report No.:HK2103180760-E Page 2 of 3 Antenna Report No.:HK2103180760-E Page 3 of 3

Page 1 of 26 Report No.: HK2103180760-E FCC TEST REPORT Test report On Behalf of Dongguan Dexinlong Electronic Technology Co., Ltd For 2.4G Wireless Keyboard Model No.: 803S, 807S, 902, 903, 904, 905, V11, V60, WT150, WT100, V21, V31, V61 FCC ID: 2AZK4-803S Prepared for : Dongguan Dexinlong Electronic Technology Co., Ltd No.25, Jinsha East Road, Shajiao Village, Shipai Town, Dongguan City, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park, Fuhai Street, Bao'an District, Shenzhen, China Date of Test: Mar. 18, 2021 ~Apr. 16, 2021 Date of Report: Apr. 16, 2021 Report Number: HK2103180760-E Page 2 of 26 Report No.: HK2103180760-E TEST RESULT CERTIFICATION Applicant’s name ................. : Dongguan Dexinlong Electronic Technology Co., Ltd Address ................................. : No.25, Jinsha East Road, Shajiao Village, Shipai Town, Dongguan City, China Manufacture's Name ............ : Dongguan Dexinlong Electronic Technology Co., Ltd Address ................................. : No.25, Jinsha East Road, Shajiao Village, Shipai Town, Dongguan City, China Product description Trade Mark: N/A Product name ........................... : 2.4G Wireless Keyboard Model and/or type reference : 803S, 807S, 902, 903, 904, 905, V11, V60, WT150, WT100, V21, V31, V61 Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.249 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of performance of tests ............. : Mar. 18, 2021 ~Apr. 16, 2021 Date of Issue ........................................... : Apr. 16, 2021 Test Result .............................................. : Pass Testing Engineer : (Gary Qian) Technical Manager : (Eden Hu) Authorized Signatory : (Jason Zhou ) Page 3 of 26 Report No.: HK2103180760-E Table of Contents Page 1 . TEST SUMMARY 5 1.1 . Test Procedures And Results 5 1.2 . Test Facility 5 1.3 . Measurement Uncertainty 5 2 . GENERAL INFORMATION 6 2.1 . General Description Of EUT 6 2.2 . Operation of EUT during testing 7 2.3 . Description Of Test Setup 8 2.4 . Measurement Instruments List 9 3 . CONDUCTED EMISSIONS TEST 10 3.1. Conducted Power Line Emission Limit 10 3.2. Test Setup 10 3.3. Test Procedure 10 3.4. Test Result 11 4. RADIATED EMISSION TEST 12 4.1. Radiation Limit 12 4.2. Test Setup 12 4.3. Test Procedure 13 4.4. Test Result 13 5. BAND EDGE 19 5.1. Limits 19 5.2. Test Procedure 19 5.3. Test Result 20 6. OCCUPIED BANDWIDTH MEASUREMENT 22 6.1. Test Setup 22 6.2. Test Procedure 22 6.3. Measurement Equipment Used 22 6.4. Test Result 22 7. ANTENNA REQUIREMENT 24 8. PHOTOGRAPH OF TEST 25 9. PHOTOS OF THE EUT 26 Page 4 of 26 Report No.: HK2103180760-E ** Modifited History ** Revison Description Issued Data Remark Revsion 1.0 Initial Test Report Release Apr. 16, 2021 Jason Zhou Page 5 of 26 Report No.: HK2103180760-E 1. TEST SUMMARY 1.1. Test Procedures And Results DESCRIPTION OF TEST SECTION NUMBERRESULT CONDUCTED EMISSIONS TEST 15.207 N/A RADIATED EMISSION TEST 15.249(a) /15.209 COMPLIANT BAND EDGE 15.249(d)/15.205 COMPLIANT OCCUPIED BANDWIDTH MEASUREMENT 15.215（c） COMPLIANT ANTENNA REQUIREMENT 15.203 COMPLIANT 1.2. Test Facility Te s t F i r m ： Shenzhen HUAK Testing Technology Co., Ltd. Address ： 1F, B2 Building, Junfeng Zhongcheng Zhizao Innovation Park, Fuhai Street, Bao'an District, Shenzhen, China 1.3. Measurement Uncertainty Measurement Uncertainty Conducted Emission Expanded Uncertainty =2.71dB, k=2 Radiated emission expanded uncertainty(9kHz-30MHz) = 4.26dB, k=2 Radiated emission expanded uncertainty(30MHz-1000MHz)= 3.90dB, k=2 Radiated emission expanded uncertainty(Above 1GHz) = 4.28dB, k=2 Page 6 of 26 Report No.: HK2103180760-E 2. GENERAL INFORMATION 2.1. General Description Of EUT Equipment 2.4G Wireless Keyboard Model Name 803S Serial Model 807S, 902, 903, 904, 905, V11, V60, WT150, WT100, V21, V31, V61 Model Difference All model’s the function, software and electric circuit are the same, only with a product color, appearance, model named and trade mark different. Test sample model: 803S. FCC ID 2AZK4-803S Antenna Type PCB Antenna Antenna Gain -1dBi Operation frequency 2402.85-2480.85MHz Number of Channels 16CH Modulation Type GFSK Power Source DC 1.5V from battery Power Rating DC 1.5V from battery Page 7 of 26 Report No.: HK2103180760-E 2.1.1. Carrier Frequency of Channels Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 1 2402.85 7 2436.85 13 2463.85 2 2407.85 8 2439.85 14 2466.85 3 2414.85 9 2441.85 15 2473.85 4 2419.85 10 2445.85 16 2480.85 5 2422.85 11 2453.85 6 2426.85 12 2459.85 2.2. Operation of EUT during testing Operating Mode The mode is used: Transmitting mode Low Channel: 2402.85MHz Middle Channel: 2441.85MHz High Channel: 2480.85MHz Page 8 of 26 Report No.: HK2103180760-E 2.3. Description Of Test Setup Operation of EUT during testing: The sample was placed (0.8m below 1GHz, 1.5m above 1GHz) above the ground plane of 3m chamber. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigated all operating modes, rotated about all 3 axis (X, Y & Z) and considered typical configuration to obtain worst position, manipulating interconnecting cables, rotating the turntable, varying antenna height from 1m to 4m in both horizontal and vertical polarizations. The emissions worst-case are shown in Test Results of the following pages. The worst case is X position. EUT Pa…

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Radiated Emissions